This option enforces ARM-only code. The compiler behaves as if Thumb is absent from the target architecture.
The compiler propagates the --arm_only option
to the assembler and the linker.
DefaultFor targets that support the ARM instruction set, the default
is --arm. For targets that do not support the
ARM instruction set, the default is --thumb.
armcc --arm_only myprog.c
Note
If you specify armcc --arm_only --thumb myprog.c,
this does not mean that the compiler checks your
code to ensure that no Thumb code is present. It means that --thumb overrides --arm_only, because
of command-line ordering.
Assembler command line options in the Assembler Reference for information on
--16and--32About ordering the compilation tools command-line options in Introducing ARM Compilation Tools.
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